Finding the Fourth Proportional to 198,842.20, 274,406.93 and 112,806.99
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Solution
The fourth proportional to 198,842.20, 274,406.93 and 112,806.99 is: 155,676.31
Step by Step Solution
- Step 1: Write the proportion equation
198,842.20 : 274,406.93 = 112,806.99 : x - Step 2: Convert to fraction form
198,842.20/274,406.93 = 112,806.99/x - Step 3: Cross multiply
198,842.20x = 274,406.93 × 112,806.99 - Step 4: Simplify right side
198,842.20x = 30,955,019,808.44 - Step 5: Solve for x
x = 30,955,019,808.44/198,842.20 - Step 6: Final answer
x = 155,676.31
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.